Used Iphone 2G and then the 3g version: at the time I used it it was more like a toy - a leisure/personal phone for me, as we were issued Nokia S60 smartphones for work. After awhile I quit all the iphone-related games and just used the Nokias for a long period of time.

When permanently moved to US past summer, I faced the Blackberry vs iPhone question: I had no chance of using Nokias as I'd end up paying 20 cents for each text message, and as far as I'm using it for my work as well as personal needs, I'm pretty deep into typing those things on a phone keyboard, and I can't do it so good on the sensor one of the iPhone. I gave it a try, but returned the phone back in a week - productivity loss(in my case-i can't blind type on it-I have to look on the screen.)
I ended up sending about 2500 text messages in July. I didn't care as the company paid for it anyway, but I thought about the Blackberry version, and so we transitioned all of our corporate "texters" to blackberries and started using emails instead of those text messages.We could've even used the Blackberry Messenger, but Russia's department of Defense banned the pin-2-pin functions for blackberries used inside the country. The results are great on the financial side as well - I pay 30$/month for mine, and their costs are even lower - roughly 11$/month for unlimited emails - just what was needed. Not only I'm annually saving the company I work for thousands of dollars, I do it exceptionally comfortable.

When it comes to the models, I currently use the Bold 9000, as it has the biggest keyboard, which is good for me and my way of using it. It is a bit wide for one hand blind typing, so after this one dies(I'm on my 2nd one already) I'll try the 9700 - read a lot about it and am willing to see for myself. As the Tour is practically identical to the 9700(by measurements), I'd say it should be a good choice. When it comes to the touchscreen - well, in my point of view, we all love the Blackberry for their hardware keyboard, as well as the idea that it is, in first place, a work device for e-mail and other needed stuff. I can't associate work and hundreds of emails with sensor screens. It will probably change soon, but as I see it, not yet.